pdfkit.rb in pdfkit-0.8.3

- old
+ new

@@ -1,4 +1,7 @@
 require 'pdfkit/source'
 require 'pdfkit/pdfkit'
 require 'pdfkit/middleware'
+require 'pdfkit/html_preprocessor'
+require 'pdfkit/os'
 require 'pdfkit/configuration'
+require 'pdfkit/wkhtmltopdf'